grid mode working on its own

2 files changed, 543 insertions, 1 deletions

diff --git a/robot/mode_grid.c b/robot/mode_grid.c
index 8526499..e36162e 100644
--- a/robot/mode_grid.c
+++ b/robot/mode_grid.c
@@ -1,3 +1,463 @@
 #include "mode_grid.h"
 
-void w2_mode_grid() {}
+void w2_mode_grid() {
+
+    initialize(); //only keep this when using this module on its own
+    
+    set_motors(0,0);
+
+    //int gridMode = 0; //robot is in the grid
+
+    //coordinates of the orders
+    orderOne();
+    orderTwo();
+    orderThree();
+    orderFour();
+    
+    beginLocation();
+
+    for (int i = 0; i < 4; i++ ){
+        
+        destination.x = order[i].x;
+        destination.y = order[i].y;
+        
+        locationMessage();
+        delay(1000);    
+        
+        if (location.x != destination.x ){
+            while(location.x != destination.x ){
+                if (location.x > destination.x){
+                    turn_West();
+                    gridFollowLine();
+                    grid_crossway_detection();
+                    location.x--;
+                    locationMessage();
+                    if (location.x == destination.x){
+                        arrivedMessage();
+                    }
+                }
+                
+                else if(location.x < destination.x){
+                    turn_East();
+                    
+                    gridFollowLine();
+                    grid_crossway_detection();
+                    location.x++;
+                    locationMessage();
+                    if (location.x == destination.x){
+                        arrivedMessage();
+                    }
+                }
+            }
+        }
+            
+        if (location.y != destination.y ){
+            while(location.y != destination.y ){
+                if (location.y > destination.y){
+                    turn_South();
+                    gridFollowLine();
+                    grid_crossway_detection();
+                    location.y--;
+                    locationMessage();
+                    if (location.y == destination.y){
+                        arrivedMessage();
+                    }
+                }
+                
+                else if(location.y < destination.y){
+                    turn_North();
+                    gridFollowLine();
+                    grid_crossway_detection();
+                    location.y++;
+                    locationMessage();
+                    if (location.y == destination.y){
+                        arrivedMessage();
+                    }
+                }
+            }
+        }
+    }
+}
+
+void full_rotation(){
+    delay_ms(500);
+    set_motors(60,-60);
+    delay_ms(540);
+    set_motors(0,0);
+    position = read_line(sensors,IR_EMITTERS_ON);
+    delay_ms(500);
+}
+
+void grid_rotation_left(){
+    delay_ms(500);
+    set_motors(-30,30);
+    delay_ms(600);
+    set_motors(0,0);
+    position = read_line(sensors,IR_EMITTERS_ON);
+    delay_ms(500);
+}
+
+void grid_rotation_right(){
+    delay_ms(500);
+    set_motors(30,-30);
+    delay_ms(600);
+    set_motors(0,0);
+    position = read_line(sensors,IR_EMITTERS_ON);
+    delay_ms(500);
+}
+
+void grid_crossway_detection(){
+    set_motors(0,0);
+    set_motors(50,50);
+    delay_ms(150);  //150
+    set_motors(0,0);
+    position = read_line(sensors,IR_EMITTERS_ON);
+    delay_ms(500);
+}
+
+//variation on "void w2_mode_maze()" 
+void gridFollowLine(){
+    unsigned int last_proportional=0;
+    long integral=0;
+
+    // This is the "main loop" - it will run forever.
+    while(1)
+    {    
+        // Get the position of the line.  Note that we *must* provide
+        // the "sensors" argument to read_line() here, even though we
+        // are not interested in the individual sensor readings.
+        position = read_line(sensors,IR_EMITTERS_ON);
+
+        // The "proportional" term should be 0 when we are on the line.
+        int proportional = ((int)position) - 2000;
+
+        // Compute the derivative (change) and integral (sum) of the
+        // position.
+        int derivative = proportional - last_proportional;
+        integral += proportional;
+
+        // Remember the last position.
+        last_proportional = proportional;
+
+        // Compute the difference between the two motor power settings,
+        // m1 - m2.  If this is a positive number the robot will turn
+        // to the right.  If it is a negative number, the robot will
+        // turn to the left, and the magnitude of the number determines
+        // the sharpness of the turn.
+        int power_difference = proportional/20 + integral/10000 + derivative*3/2;
+
+        // Compute the actual motor settings.  We never set either motor
+        // to a negative value.      
+        const int max = 60;
+        if(power_difference > max)
+            power_difference = max;
+        if(power_difference < -max)
+            power_difference = -max;
+        
+        if(sensors[0] >= 500 && sensors[1] >= 250  && sensors[2] >= 500  &&  sensors[3] >= 250  &&sensors[4] >= 500){
+            break;
+        }
+        else if (sensors[0] >= 500 && sensors[1] >= 200 && sensors[4] < 100){
+            break;
+        }
+        else if(sensors[4] >= 500 && sensors[3] >= 200 && sensors[0] < 100){ //for the south and west borders of the grid
+            break;
+        }
+        else if(sensors[4] >= 500 && sensors[3] >= 200 && sensors[2] <100 && sensors[0] < 100){
+            break;
+        }
+
+        else{ 
+            if(power_difference < 0 && (sensors[2] > 100 || sensors[3] > 100 || sensors[1] > 100) ){
+                set_motors(max+power_difference, max);}
+            else if( power_difference > 0 && ( sensors[2] > 100 || sensors[3] > 100 || sensors[1] > 100)){
+                set_motors(max, max-power_difference);} 
+        }                   
+    }
+}
+
+//coördinates of the orders
+void orderOne(){
+    order[0].x = 1; //1
+    order[0].y = 3; //0
+}
+
+void orderTwo(){
+    order[1].x = 3; //2
+    order[1].y = 2; //2
+}
+
+void orderThree(){
+    order[2].x = 1; //0
+    order[2].y = 4; //4
+}
+
+void orderFour(){
+    order[3].x = 0; //3
+    order[3].y = 0; //1
+}
+
+//setting coördinate and direction when entering the grid from the maze
+void beginLocation(){
+    location.x = 4;
+    location.y = 0;
+    direction = West;
+}
+
+void turn_North()
+{
+    clear();
+    print("North");
+
+    switch (direction)
+    {
+        case North:
+        break;
+        
+        case East:
+        grid_rotation_left(); 
+        break;
+        
+        case South: 
+        full_rotation();
+        break;
+        
+        case West:
+        grid_rotation_right();
+        break;
+    }   
+    direction = North;
+}
+
+void turn_West()
+{
+    clear();
+    print("West");
+    
+    switch (direction)
+    {
+        case West:
+        break;
+        
+        case North:
+        grid_rotation_left(); 
+        break;
+        
+        case East:
+        full_rotation();
+        break;
+        
+        case South:
+        grid_rotation_right();; 
+        break;
+    }   
+    direction = West;
+}
+
+void turn_South()
+{
+    clear();
+    print("South");
+
+    switch (direction)
+    {
+        case South:
+        break;
+        
+        case West:
+        grid_rotation_left();
+        break;
+        
+        case North: 
+        full_rotation();
+        break;
+        
+        case East:
+        grid_rotation_right();; 
+        break;
+    }
+    direction = South;
+}
+
+void turn_East()
+{
+    clear();
+    print("East");
+
+    switch (direction)
+    {
+        case East:
+        break;
+        
+        case South:
+        grid_rotation_left(); 
+        break;
+        
+        case West:
+        full_rotation();
+        break;
+        
+        case North:
+        grid_rotation_right();; 
+        break;
+    }
+    direction = East;
+}
+
+void locationMessage(){
+    clear();
+    print_long(location.x);
+    print(",");
+    print_long(location.y);
+    delay(200); //1000
+}
+
+void arrivedMessage(){
+    clear();
+    print("ARRIVED");
+}
+
+//!UNDER THIS CAN ALL BE TAKEN AWAY, THIS IS USED IN MODE_MAZE & Callibration!
+
+// Initializes the 3pi, displays a welcome message, calibrates, and
+// plays the initial music.
+// Initializes the 3pi, displays a welcome message, calibrates, and
+// plays the initial music.
+void initialize()
+{
+    unsigned int counter; // used as a simple timer
+    
+    // This must be called at the beginning of 3pi code, to set up the
+    // sensors.  We use a value of 2000 for the timeout, which
+    // corresponds to 2000*0.4 us = 0.8 ms on our 20 MHz processor.
+    pololu_3pi_init(2000);
+    load_custom_characters(); // load the custom characters
+    
+    // Play welcome music and display a message
+    print_from_program_space(welcome_line1);
+    lcd_goto_xy(0,1);
+    print_from_program_space(welcome_line2);
+    play_from_program_space(welcome);
+    delay_ms(1000);
+
+    clear();
+    print_from_program_space(demo_name_line1);
+    lcd_goto_xy(0,1);
+    print_from_program_space(demo_name_line2);
+    delay_ms(1000);
+
+    // Display battery voltage and wait for button press
+    while(!button_is_pressed(BUTTON_B))
+    {
+        int bat = read_battery_millivolts();
+
+        clear();
+        print_long(bat);
+        print("mV");
+        lcd_goto_xy(0,1);
+        print("Press B");
+
+        delay_ms(100);
+    }
+
+    // Always wait for the button to be released so that 3pi doesn't
+    // start moving until your hand is away from it.
+    wait_for_button_release(BUTTON_B);
+    delay_ms(1000);
+
+    // Auto-calibration: turn right and left while calibrating the
+    // sensors.
+    for(counter=0;counter<80;counter++)
+    {
+        if(counter < 20 || counter >= 60)
+        set_motors(40,-40);
+        else
+        set_motors(-40,40);
+
+        // This function records a set of sensor readings and keeps
+        // track of the minimum and maximum values encountered.  The
+        // IR_EMITTERS_ON argument means that the IR LEDs will be
+        // turned on during the reading, which is usually what you
+        // want.
+        calibrate_line_sensors(IR_EMITTERS_ON);
+
+        // Since our counter runs to 80, the total delay will be
+        // 80*20 = 1600 ms.
+        delay_ms(20);
+    }
+    set_motors(0,0);
+
+    // Display calibrated values as a bar graph.
+    while(!button_is_pressed(BUTTON_B))
+    {
+        // Read the sensor values and get the position measurement.
+        unsigned int position = read_line(sensors,IR_EMITTERS_ON);
+
+        // Display the position measurement, which will go from 0
+        // (when the leftmost sensor is over the line) to 4000 (when
+        // the rightmost sensor is over the line) on the 3pi, along
+        // with a bar graph of the sensor readings.  This allows you
+        // to make sure the robot is ready to go.
+        clear();
+        print_long(position);
+        lcd_goto_xy(0,1);
+        display_readings(sensors);
+
+        delay_ms(100);
+    }
+    wait_for_button_release(BUTTON_B);
+
+    clear();
+
+    print("Go!");
+
+    // Play music and wait for it to finish before we start driving.
+    play_from_program_space(go);
+    while(is_playing());
+}
+
+// This function loads custom characters into the LCD.  Up to 8
+// characters can be loaded; we use them for 7 levels of a bar graph.
+void load_custom_characters()
+{
+    lcd_load_custom_character(levels+0,0); // no offset, e.g. one bar
+    lcd_load_custom_character(levels+1,1); // two bars
+    lcd_load_custom_character(levels+2,2); // etc...
+    lcd_load_custom_character(levels+3,3);
+    lcd_load_custom_character(levels+4,4);
+    lcd_load_custom_character(levels+5,5);
+    lcd_load_custom_character(levels+6,6);
+    clear(); // the LCD must be cleared for the characters to take effect
+}
+
+// This function displays the sensor readings using a bar graph.
+void display_readings(const unsigned int *calibrated_values)
+{
+    unsigned char i;
+
+    for(i=0;i<5;i++) {
+        // Initialize the array of characters that we will use for the
+        // graph.  Using the space, an extra copy of the one-bar
+        // character, and character 255 (a full black box), we get 10
+        // characters in the array.
+        const char display_characters[10] = {' ',0,0,1,2,3,4,5,6,255};
+
+        // The variable c will have values from 0 to 9, since
+        // calibrated values are in the range of 0 to 1000, and
+        // 1000/101 is 9 with integer math.
+        char c = display_characters[calibrated_values[i]/101];
+
+        // Display the bar graph character.
+        print_character(c);
+    }
+}
+
+void full_rotation(){
+    set_motors(0,0);
+    delay_ms(500);
+    set_motors(60,-60);
+    delay_ms(540);
+    set_motors(0,0);
+    position = read_line(sensors,IR_EMITTERS_ON);
+    delay_ms(500);
+}
diff --git a/robot/mode_grid.h b/robot/mode_grid.h
index 55093ad..42c2c80 100644
--- a/robot/mode_grid.h
+++ b/robot/mode_grid.h
@@ -7,4 +7,86 @@
  *
  * processes orders from the order buffer
  */
+
+enum orientation{
+    North,
+    East,
+    South,
+    West
+} direction;
+
+typedef struct {
+    int x;
+    int y;
+} coordinates;
+
+coordinates order[4];
+coordinates location;
+coordinates destination;
+
+char xLocation;
+char yLocation;
+
+//LINE 25-68 CAN BE TAKEN AWAY WHEN USED WITH MODE_MAZE
+
+// The 3pi include file must be at the beginning of any program that
+// uses the Pololu AVR library and 3pi.
+#include <pololu/3pi.h>
+
+// This include file allows data to be stored in program space.  The
+// ATmega168 has 16k of program space compared to 1k of RAM, so large
+// pieces of static data should be stored in program space.
+#include <avr/pgmspace.h>
+
+unsigned int sensors[5]; // an array to hold sensor values
+unsigned int position;
+// Introductory messages.  The "PROGMEM" identifier causes the data to
+// go into program space.
+const char welcome_line1[] PROGMEM = " Pololu";
+const char welcome_line2[] PROGMEM = "3\xf7 Robot";
+const char demo_name_line1[] PROGMEM = "PID Line";
+const char demo_name_line2[] PROGMEM = "follower";
+
+// A couple of simple tunes, stored in program space.
+const char welcome[] PROGMEM = ">g32>>c32";
+const char go[] PROGMEM = "L16 cdegreg4";
+
+// Data for generating the characters used in load_custom_characters
+// and display_readings.  By reading levels[] starting at various
+// offsets, we can generate all of the 7 extra characters needed for a
+// bargraph.  This is also stored in program space.
+const char levels[] PROGMEM = {
+    0b00000,
+    0b00000,
+    0b00000,
+    0b00000,
+    0b00000,
+    0b00000,
+    0b00000,
+    0b11111,
+    0b11111,
+    0b11111,
+    0b11111,
+    0b11111,
+    0b11111,
+    0b11111
+};
+
 void w2_mode_grid();
+void full_rotation();
+void grid_rotation_left();
+void grid_rotation_right();
+void grid_crossway_detection();
+void gridFollowLine();
+void orderOne();
+void orderTwo();
+void orderThree()
+void orderFour()
+void beginLocation()
+void turn_North()
+void turn_West()
+void turn_South()
+void turn_East()
+void locationMessage()
+void arrivedMessage()
+